I was diagnosed in Nov 12 and put on Levothyroxine 25mg, still have symptoms (tiredness, dry skin, feeling cold, weight gain, complete brain fog . . .) My dose was increased to 50mg this week and have a referral to an endo. Am now getting dreadful headaches everyday. I think they might have started just before my increase but was wondering if they are a symptom of hypothyroidism or are they a side effect of Levothyroxine? Any views please? I don't particularly want to live on nurofen every day.